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Please note: This device does not differentiate between natural and synthetic colored gemstones
What are people saying about the Handbook of Gemmology
The coffee-table-size volume takes the reader on a fascinating journey covering the symbolic power of diamonds through the ages
accurate mould making and casting across a wide range of applications
Pearl Buying Guide Hammers Please note: This device doesPEARLS OF WISDOM on how to evaluate pearls, spot fakes and detect dyed pearls. Included in this full color guide are tips on pearl care, clasps, and creative ways to wear pearls. All types of pearls are discussedAkoya, Tahitian, South Sea, Sea of Cortez, freshwater, abalone, scallop, conch, melo, quahog, giant clam, mabe, blister, keshi, natural, imitation, cultured. Although technical data is included to aid gemologists in detecting treatments and
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